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Item Type: NewsGroup Date Entered: 3/1/2005 12:17:32 PM Date Modified: Subscribers: 0 Subscribe Alert
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aroba
Asp.Net User
Design View not available for UserConrol when inheriting from custom class3/1/2005 12:17:32 PM

0/0

Dear all,

I'm facing an ennoying problem. Hope one of you have any idea how to solve this or where to look at.

pb: I start by creating a web user control which I can edit it in Design or HTML view from visual studio .NET 2003. When I create a base class which inherits from UserControl and replace the base class of my control with this one I cannot have anymore the control in design View, only the HTML...


Any idea?

Thanx for you help.
WilcoB
Asp.Net User
Re: Design View not available for UserConrol when inheriting from custom class3/1/2005 6:06:26 PM

0/0

Is your base class an abstract class? Try changing it to a concrete class if it is abstract, or make it abstract if it isn't. I think it had to do with someting like that.

If that's not the case, then it's probably not possible to have visual inheritence in VS2k2/VS2k3.
- Wilco Bauwer / http://www.wilcob.com
miguelcastro67
Asp.Net User
Re: Design View not available for UserConrol when inheriting from custom class3/1/2005 6:29:35 PM

0/0

Actually, you must make page or usercontrol base classes concrete. Behind the scenes, ASP.NET will attempt to instantiate every class in the inheritance chain on pages and usercontrols so making it abstract (mustinherit) won't run.

Miguel Castro - [email protected] - www.dotnetdude
plblum
Asp.Net User
Re: Design View not available for UserConrol when inheriting from custom class3/1/2005 6:40:10 PM

0/0

Do not subclass from UserControl to create a "custom control" which is a class with its own properties shown in the design view and the Properties Editor. Subclass from System.Web.UI.WebControl and follow the .net documentation for creating custom controls. Also consider the book "Developing ASP.NET Server Controls and Components".

The UserControl class has a specific usage: for letting you create small groups of controls visually (or in ASP.NET text mode). The customcontrol is for creating controls entirely programmatically that interact with the Properties Editor, support ControlDesigners and ControlBuilders (key classes for interacting with a control in design mode and ASP.NET text).
--- Peter Blum
Creator of Professional Validation And More Suite, Peter's Date Package, and Peter's Polling Package
www.PeterBlum.com
4 Items, 1 Pages 1 |< << Go >> >|


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Web:
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